#39306B
Closest named color: Prussian Blue (#1D3557). oklch(35.2% 0.099 287.2), rgb(57, 48, 107).
Aa
White text reads best on this color (11.60:1).
About this color
#39306B is a dark, moderately saturated purple. In OKLCH its lightness is 35%, its chroma 0.099 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.058 away. White text reads best on it, at 11.60:1.
| Hue family | Purples |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.80:1 |
| White text | 11.60:1 |
Values
| HEX | #39306B |
| RGB | rgb(57, 48, 107) |
| HSL | hsl(249, 38%, 30%) |
| OKLCH | oklch(35.2% 0.099 287.2) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #39306B | 11.60:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #39306B | 1.80:1 | Fails | Lc 7.4 | Not readable |
| #39306B text on white | 11.60:1 | AAA | Lc 96.5 | Preferred for body text |
| #39306B text on black | 1.80:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#F5F5FC
oklch(97.2% 0.009 286.2)
-
Step 100
100
#E8E8F8
oklch(93.6% 0.022 286)
-
Step 200
200
#D7D6F4
oklch(88.6% 0.041 287.1)
-
Step 300
300
#BDBAEF
oklch(80.9% 0.074 287.2)
-
Step 400
400
#9C94E7
oklch(70.6% 0.12 287.3)
-
Step 500
500
#8578DF
oklch(63.1% 0.151 287)
-
Step 600
600
#705ECD
oklch(55.6% 0.165 287.2)
-
Step 700
700
#5E4DB1
oklch(49.1% 0.153 287.2)
-
Step 800
800
#4D4090
oklch(42.8% 0.127 287.2)
-
Step 900
900 (this color)
#39306B
oklch(35.2% 0.099 287.2)
-
Step 950
950
#252143
oklch(27.1% 0.062 286.9)
#39306B with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #143A6D | 0.051 |
| Deuteranopia (no green cones) | #14376A | 0.050 |
| Tritanopia (no blue cones) | #2A3D48 | 0.084 |
| Achromatopsia (no color) | #393939 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39306B
#39306B
oklch(35.2% 0.099 287.2)
- #403D00
#403D00
oklch(35.2% 0.075 106.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #39306B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.058
- Marine Blue #01386A ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.068
- Twilight Blue #0A437A ΔE 0.069
- Marine #042E60 ΔE 0.069
- Space Cadet #2B2D42 ΔE 0.077
- Dark Blue Grey #1F3B4D ΔE 0.078
- Dark Grey Blue #29465B ΔE 0.079
Use #39306B in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.